v0.2.1 · open source · zero telemetry

you say it.
dex ships it.

Your terminal-native coding buddy. It reads, edits, tests — you review and ship.

Your code. Your models. Your terminal. ♥

$ curl -fsSL https://raw.githubusercontent.com/sumofbytes/dex/HEAD/scripts/install.sh | sh

windows .zip & all binaries + checksums on github releases

See it work Get started View on GitHub

lives in your terminal MCP-native never phones home

review PR 69 — does the input-wrap fix hold up?

◌ Thought for 3s

▸ bash git fetch origin pull/69/head:pr-69-review-tmp 2>&1 | tail -2; git show pr-69-review-tmp:src/ui/wrapping.rs | head -n 120

└ ✓ From github.com:sumofbytes/dex · 3.0s

* [new ref] refs/pull/69/head -> pr-69-review-tmp

#![allow(dead_code)]

use unicode_width::UnicodeWidthChar;

/// Greedily wrap an input line and locate the cursor in the

… +108 more lines

▸ bash git worktree add /tmp/pr69-check pr-69-review-tmp 2>&1 | tail -2; cargo test --all-targets ui::wrapping 2>&1 | tail -25

└ ✓ Preparing worktree (checking out 'pr-69-review-tmp') · 1m 57s

HEAD is now at 8c8ce58 Merge branch 'develop' into fix/input-wrap-trailing-space

---worktree test---

Compiling reqwest v0.12.28

Compiling ratatui-markdown v0.3.6

… +16 more lines

▸ bash cargo fmt -- --check 2>&1 | head -5; cargo clippy --all-targets -- -D warnings 2>&1 | tail -5

└ ✓ fmt:0 · 51s

Checking git2 v0.21.0

Checking dex v0.2.1 (/tmp/pr69-check)

Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.42s

▸ bash grep -n "ToolOutput" ../dex/src/ui.rs ../dex/src/ui/render.rs | head -n 40

└ ✓ ../dex/src/ui.rs:97: /// `ToolOutput` can pick the preview · 17ms

../dex/src/ui.rs:919: SinkLine::ToolOutput {

../dex/src/ui.rs:928: let failed = !success;

../dex/src/ui.rs:936: Span::styled(if failed { "✗ " }

… +223 more lines

▸ read 2 files

└ ✓ 2 files · 320 lines · 1ms

==> /home/aks/Work/dexhq/src/styles/global.css <==

1 /* ── dex · design tokens & base (monochrome) ── */

2 :root {

3 /* surfaces — neutral, no hue */

… +316 more lines

◌ Thought for 51s

PR 69 holds up — wrap fix is sound, fmt clean, clippy green. One nit: no lib target, so --all-targets is the way to test it. Ship it.

Worked for 3m 12s · 18.4k tokens

· session saved · /undo ready

▍

click + type — Enter sends · / for commands · try /clear or /model

// plugs into your stack

openai-compatible apisopencode zenmoonshot/kimianthropiccodex oauthany mcp serverherdr panesmodels.dev catalog

// why dex

no black box. just diffs.

Every tool call, edit, and test — out in the open. Steer it, undo it, ship it.

fast loop. tiny surface. full ctrl.

$ dex

pair in the TUI

Watch it work live. Steer mid-run, ask follow-ups, /undo oopsies, /resume anytime.

$ dex "fix the flaky test"

script it in CI

One-shot, single-tool, or raw JSON. Pipe it, cron it, CI it via $DEX_BIN.

$ dex serve · dex connect

run it anywhere

Agent stays on your big box, you chill on your laptop. Reconnects pick up where you left off.

$ read · bash · ffgrep

tiny, fenced toolset

read, write, edit, grep, find, shell. Sandboxed to your repo. Nothing sneaky, all visible.

$ dex doctor

BYO model

OpenAI, Anthropic, Codex, what's next. One knob: model:. doctor shows where each value came from.

$ dex mcp login github

plugs into MCP

GitHub + any MCP server over stdio / HTTP / SSE. Skills + AGENTS.md ride along with your repo.

// demo

prompt in. green tests out.

One prompt → searched, patched, tested. You just review the diff.

$ dex "rotate refresh tokens"

$ dex "rotate refresh tokens; kill sessions on password change"

→ ffgrep "refresh" · 23 files in src/auth/**

→ read src/auth/session.ts · src/auth/tokens.ts

1 single-use rotation in src/auth/tokens.ts

2 revoke-all on password change in src/routes/account.ts

3 verify: cargo test via bash

permission: trusted · session journaled ✓

// capabilities

sweats the boring stuff.

search, edits, models, memory — handled with care.

$ ffgrep "refrsh" → 23 files, typo forgiven

search at thought speed

Same engine as fff.nvim. Typo-tolerant, ranks definitions first. You land on the thing, not every mention.

ffgrep + fffind: same engine as fff.nvim, sandboxed to your repo.

$ edit src/auth/tokens.ts → /undo ready

edits that can't half-finish

Write → fsync → swap. Crashes never leave half-files. Changed underneath you? dex stops, never clobbers. /undo has your back.

stale file? undo tells you straight, no guessing.

$ /model anthropic/claude-sonnet · /thinking high

every model, natively

Responses, Chat Completions, Anthropic Messages — done right. Thinking stays signed, reasoning survives swaps. codex --login and go.

one knob: model:. zero protocol yoga.

$ 212k → 18k · $0.42 this session

long runs stay coherent

Full context? Older turns get summarized — free, no extra call. Overflow still? Compact once more and retry. Spend always in view.

sessions are JSONL. reconnect = right where you left off.

// open source

built in the open. yours forever.

MIT / Apache-2.0. All of it. For all of us.

✓
everything, for everyone — TUI, sessions, skills, MCP — no paywall, no seat plan. Ever.
✓
mit / apache-2.0 — Use it at work, fork it, make it yours.
✓
your keys, your data — No proxy, no collection, no phone-home. Straight to your provider.
✓
built in the open, with love — Issues are the backlog. contributing.md shows you how to jump in.

★ star on github

contributing · ~/src

$ git clone https://github.com/sumofbytes/dex
→ contributing.md: build, test, clippy ✓
$ cargo build --release
→ binary: target/release/dex ✓
$ dex --version
dex v0.2.1 · mit or apache-2.0 · no telemetry
$ ▍

// get started

go ship something you love.

Tell dex what's broken. Grab a coffee. Come back to a tested diff.